I have a couple of Radeon R9 290X cards hooked together on crossfireX with the latest driers installed and I don't get any framerate boost whatsoever compared to when I run the game with a single gpu. I've seen a lot of people talk about their crossfirex with this game and how well it performs with high resolutions at 60 frames, but I'm not seeing any difference. For example, the area that I'm in right now in the game run around 30 ish frames with a single gpu or with crossfireX too, there's no difference... How can I make my crossfirex work so I don't have to return this card? What am I missing?
